Railroad Archives Online
- CollectionD0036 - George Werkema Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel Locomotives
- 175 more...
- Itemimg411 - Great Northern Diesel Locomotive 682 at Stanford, Montana, 1965
- Itemimg412 - Great Northern Diesel Locomotive 682 at Stanford, Montana, 1965
- Itemimg413 - Great Northern Diesel Locomotive 682 at Great Falls, Montana, 1965
- Itemimg414 - Great Northern Diesel Locomotive 369A at Great Falls, Montana, 1965
- Itemimg415 - Great Northern Diesel Locomotive 146 at Great Falls, Montana, 1965
- Itemimg416 - Great Northern Diesel Locomotive 369A at Great Falls, Montana, 1965
- Itemimg42 - Great Northern Diesel Locomotive 360A at Saint Paul, Minnesota, 1967
- Itemimg43 - Great Northern Diesel Locomotive 361B at Shelby, Montana, 1967
- Itemimg44 - Great Northern Diesel Locomotive 362A at Summit, Montana, 1967
- 44 more...